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我县是全国沙田柚生产基地县,目前已种植沙田柚12万亩。在为害沙田柚的各种害虫中,最主要的是蚧类,经近年的调查鉴定,主要种类有红圆蚧、褐圆蚧、矢尖蚧、糠片蚧、黑点蚧、吹绵蚧、堆粉蚧等,其中分布最广、发生为害最严重的是红圆蚧[Aonidiella aurantiiMaskell)]。它以幼蚧和雌成蚧终生固定在沙田柚的枝条、叶片和果实上吸食汁液,特别是为害内膛挂果枝条致枯死而严重影响挂果。红圆蚧一般在3年生树龄以上的柚树上发生为害,
My county is a national pomelo production base County, has planted 12 acres of Shatian pomelo. In the pests of harmful pests in Shatian pomelo, the most important one is Kuwana, which has been investigated and identified in recent years. The main species are Rhododendron mongolicus, Oryza rufipogon, Hemiplegrus kaempferi, Pile mealybugs, etc., of which the most widely distributed, the most serious occurrence is the red scale [Aonidiella aurantiiMaskell]. It is the life of young scale and female scale insects fixed branches in Shade pomelo, leaves and fruits on the juice, especially for the damage caused by the hanging fruit branches dead and seriously affect the fruiting. Red scale insects generally occur in 3-year-old tree pome on the tree damage,